
*{
  margin: 0;
  padding: 0;
}

body{
  background: #333;
}

.box{
  width: 1000px;
  height: 280px;
  margin: 50px auto;
}

.box .link{
  width: 205px;
  height: 280px;
  margin: 0 20px;
  float: left;
}

.link .icon{
  display: inline-block;
  width: 100%;
  height: 190px;
  transition:all 0.2s linear;
  -webkit-transition: all 0.2s linear;
  -moz-transition: all 0.2s linear;
}

.link-mission .icon{
  background: url("img/mission.png") no-repeat center center;
}

.link-play .icon{
  background: url("img/play.png") no-repeat center center;
}

.link-touch .icon{
  background: url("img/touch.png") no-repeat center center;
}

.link .icon:hover{
  transform: rotate(360deg) scale(1.2);
  -ms-transfrom: rotate(360deg) scale(1.2);
  -moz-transfrom: rotate(360deg) scale(1.2);
  -webkit-transfrom: rotate(360deg) scale(1.2);
}

.link .button{
  display: block;
  width: 180px;
  height: 50px;
  text-decoration: none;
  line-height: 50px;
  color: #2dcb70;
  font-family: "微软雅黑",Arial,Helvetica,sans-serif;
  font-weight: bold;
  border: 2px solid rgba(255, 255, 255, 0.8);
  padding-left: 20px;
  margin: 0 auto;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  background: url("img/arrow.png") no-repeat 130px center;
  position: relative;
  transition: 0.4s ease;
  -webkit-transition: 0.4s ease;
  -moz-transition: 0.4s ease;
}

.link .button:hover{
  border: 2px solid rgba(255, 255, 255, 1);
  background: url("img/arrow.png") no-repeat 140px center;
}

.button .line{
  display: block;
  position: absolute;
  background: none;
}

.button:hover .line{
  background: #fff;
}

.button .line-top{
  height: 2px;
  width: 0px;
  left:-110%;
  top: -2px;
  transition: 0.2s ease;
}

.button:hover .line-top{
  width: 180px;
  left: -2px;
}

.button .line-bottom{
  height: 2px;
  width: 0px;
  right:-110%;
  bottom: -2px;
  transition: 0.2s ease;
}

.button:hover .line-bottom{
  width: 180px;
  right: -2px;
}

.button .line-left{
  height: 0px;
  width: 2px;
  left:-2px;
  bottom: -110%;
  transition: 0.2s ease;
}

.button:hover .line-left{
  height: 50px;
  bottom: -2px;
}

.button .line-right{
  height: 0px;
  width: 2px;
  right:-2px;
  top: -110%;
  transition: 0.2s ease;
}

.button:hover .line-right{
  height: 50px;
  top: -2px;
}

.box .tip{
  position: absolute;
  padding: 0px 14px;
  height: 35px;
  line-height: 35px;
  background: #2dcb70;
  color: #fff;
  top: 160px;
  font-size: 16px;
  font-weight: normal;
  text-transform: none;
  margin: 0 auto;
  border-radius: 3px;
  opacity: 0;
}

.tip em{
  font-style: normal;
}

.tip span{
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  border: 7px solid transparent;
  border-top-color: #2dcb70;
  left:50%;
  margin-left: -3px;
  bottom: -14px;
}
